Watch Vasyl Lomachenko knock out Roman Martinez

Vasyl Lomachenko won his second world title in just his seventh pro fight on Saturday night's HBO Boxing After Dark show, flattening Roman "Rocky" Martinez with a left hand and a tremendous right hook follow-up in the fifth round, scoring another Knockout of the Year contender in a 2016 that has kinda been filled with these moments.

Lomachenko (6-1, 4 KO) has not been known as a power puncher as a pro, but he simply lit up Martinz (29-3-3, 17 KO) with this shot, absolutely turning his lights out. It was really a sensational finish.

Here's the video:

Watch: @vasyllomachenko's match winning explosive right hook. #MartinezLomachenko https://t.co/gN6I93NivU

— HBOboxing (@HBOboxing) June 12, 2016

The second-best part, behind the KO itself, might be Roy Jones Jr on commentary.

Lampley: "Well that was pretty explosive."
Jones: "Over."
Lampley: "What a right hook."
Jones: "Over."
Lampley: "What a sensational right hook!"
Jones: "Over."
Lampley: "And it doesn't look like Rocky Martinez is gonna get up from that."
Jones: "Over."